Brigaglia, Aldo; Palladino, Nicla; Vaccaro, Maria Alessandra (2018). "Historical notes on star geometry in mathematics, art and nature". In Emmer, Michele; Abate, Marco (eds.). Imagine Math 6: Between Culture and Mathematics. Springer International Publishing. pp. 197–211. doi:10.1007/978-3-319-93949-0_17. hdl:10447/325250. ISBN978-3-319-93948-3.
Brigaglia, Aldo; Palladino, Nicla; Vaccaro, Maria Alessandra (2018). "Historical notes on star geometry in mathematics, art and nature". In Emmer, Michele; Abate, Marco (eds.). Imagine Math 6: Between Culture and Mathematics. Springer International Publishing. pp. 197–211. doi:10.1007/978-3-319-93949-0_17. hdl:10447/325250. ISBN978-3-319-93948-3.
Klein, Douglas J. (2002). "Resistance-Distance Sum Rules"(PDF). Croatica Chemica Acta. 75 (2): 633–649. Archived from the original(PDF) on 10 June 2007. Retrieved 30 September 2006.
Klein, Douglas J. (2002). "Resistance-Distance Sum Rules"(PDF). Croatica Chemica Acta. 75 (2): 633–649. Archived from the original(PDF) on 10 June 2007. Retrieved 30 September 2006.